Lido is back with a new track titled “You Lost Your Keys.” The stripped-down song features the Norwegian musician singing over his own piano playing. For those who know a bit of music theory, you’d realize that the title is a literal description of the track; Lido skillfully (and likely, improvisationally) switches from key to key during the most unexpected moments while singing the same refrain over and over again: “I can’t decide what key you’re in, you keep changing on me by the second.” Listen to the track above.